Try It On
Case Diameter 40mm
Case Diameter 40mm
Try It On
Case Diameter 40mm
Wrist Size (in)
Band Size
The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.
150 - 205mm (5.9 - 8.1in)
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Wrist Size (in)
Band Size
The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.
150 - 205mm (5.9 - 8.1in)
How to measure your wrist size
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Delivery, Returns & Warranty
Delivery
Free Standard Shipping on most orders. Fan Shop orders do not qualify for free shipping. Buy two straps get free Standard Shipping.
Returns
Get your refund faster with easy online returns! Mail your items back with our return label within 30 days.
Warranty
Your Timex® watch includes a limited manufacturer’s warranty covering defects in materials and workmanship for a period of one year from the original purchase date.
Add optional protection with Extend in your cart or checkout for coverage against accidental damage and mechanical failure beyond the standard warranty.
Swiss Automatic GMT Movement
Skeletonized Stainless Steel Case
NBR Synthetic Rubber Strap
Glass-Box Sapphire Crystal
Water Resistant to 100 Meters
Timex Atelier GMT24 M1a
A Dual-Time Machine for the Modern Traveller
The Timex Atelier GMT24 M1a brings clarity and proportion to one of watchmaking’s most enduring functions. Every surface is deliberate, each detail shaped to balance depth and wearability. At its core is the Swiss-made Landeron 24 GMT automatic movement, revealed through an exhibition case back, with a fourth hand marking time across borders. This is not a jet-age revival. It is time, refined for the traveller’s wrist.Specifications
Product ID
TW6A20700
Swiss Automatic GMT Movement
Crafted in Switzerland, this self-winding movement is powered by your motion as you wear the watch and features an additional 24-hour hand that can be used to track a second time zone.
- Movement Landeron
- Caliber L24 GMT
- Country of Origin Switzerland
- Power Reserve Approximately 40 Hours
- Jewels 28 Jewels
- Accuracy ±15 sec/ day
- Hacking Seconds Yes
Skeletonized Stainless Steel Case
Crafted of tarnish-free stainless steel, the skeletonized case is reinforced by a plated steel mid-case.
- Case Diameter 40 mm
- Lug-to-Lug Distance 48.11 mm
- Case Height 12.7 mm
- Case Material Stainless Steel
- Case Color Silver-Tone
- Case Finish Brushed
- Dial Color Black
- Dial Markings Markers (Full)
- Battery Type Automatic
NBR Synthetic Rubber Strap
NBR (Nitrile Butadiene Rubber) is a premium synthetic rubber prized for its exceptional resistance to oils, chemicals, and wear, making it significantly more durable while maintaining superior comfort and flexibility.
- Band / Lug Width 20 mm
- Band Material NBR (Nitrile Butadiene Rubber)
- Band Color Black
- Band Buckle Clasp (Deployant)
Glass-Box Sapphire Crystal
With exceptional scratch resistance, the sapphire crystal lens is as hard and clear as a gemstone. The glass-box sapphire crystal—a raised, distinctive domed glass design—creates a lens-like effect that enhances dial clarity and adds captivating depth.
Water Resistant to 100 Meters
This watch is suitable for swimming, snorkelling, poolside diving or surfing. It is not suitable for scuba diving. To maintain water resistance, do not press any buttons while underwater.
100m
Water Resistance
This watch is suitable for swimming, snorkelling, poolside diving or surfing. It is not suitable for scuba diving. To maintain water resistance, do not press any buttons while underwater.
30m
Light rain, sweat & splashes.
50m
Short swims.
100m
Swimming, snorkeling & surfing.
200m
Recreational scuba-diving.
300m
Deep-sea exploration.
Swiss Luminova
Swiss Luminova in-fill charges quickly in light and provides a glow in low-light conditions.
Enamel Dial
Enamel dial offers a deep glossy finish created using a high temperature firing process.
Date Window
The watch dial incorporates a date window, offering convenient access to the current date.
Details that Emerge
Try It On
Case Diameter 40mm
Case Diameter 40mm
Try It On
Case Diameter 40mm
Wrist Size (in)
Band Size
The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.
150 - 205mm (5.9 - 8.1in)
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Wrist Size (in)
Band Size
The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.
150 - 205mm (5.9 - 8.1in)
How to measure your wrist size
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
A Legacy Of Modernity
“Timex Atelier Is Designed To Be Discovered, Slowly, Over Time.”
Where Form Travels
The materials we have selected for each piece capture our commitment to quality and the expression of a design language that speaks for itself.